Claude Haiku 4.5 vs GPT-5.6 Sol Pro.
model vs model · prices as of
Claude Haiku 4.5 and GPT-5.6 Sol Pro split the 5 rounds this table counts: the two list price rows, the cheapest price we can explain, the standard price and context. The weighting you pick decides the rest.
AnthropicClaude Haiku 4.5
$6.87/M tokens
cheapest we can explain, at Poe · $0.773 per 1,000 pages
200k context · tool calling · reads images
OpenAIGPT-5.6 Sol Pro
$8/M tokens
OpenAI list price, nothing below it is accounted for · $0.90 per 1,000 pages
1.1M context · tool calling · reads images
List price in (lower wins)
$1/M
$1/M
List price out (lower wins)
$5/M
$5/M
Cheapest we can explain (lower wins)
$6.87/M at Poe
none below list
Standard price (lower wins)
$8/M
$8/M
Cost per 1,000 pages (lower wins)
$0.773
$0.90
Context
200k tokens
1.1M tokens
Open weights
no
not stated
Tool calling
yes
yes
Structured output
yes
yes
Reads images
yes
yes
Reasoning
yes
yes
Released
15 Oct 2025
9 Jul 2026
Providers selling it
48
8
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
no provider to check
Providers selling both · 7
NanoGPT$8 / $16
Nous Portal$8 / $16
OpenRouter$8 / $16
Kilo Gateway$8 / $32
LLMTR$8 / $32
302.AI$8 / $45
Azure AI Foundry$8 / $45
Claude Haiku 4.5 then GPT-5.6 Sol Pro, per million tokens
Go further
Add a third or fourth model, or switch the weighting, in the tool.
What moved in the last seven days
- Claude Haiku 4.5Nous Portal$0.80 / $4 $1 / $525% dearer ·
- GPT-5.6 Sol ProOpenAIOpenAI's list price, in and out per million tokens$2 / $10 $1 / $550% cheaper ·
- GPT-5.6 Sol ProNous Portal$1.60 / $8 $2 / $1025% dearer ·
Frequently asked
- Which is cheaper, Claude Haiku 4.5 or GPT-5.6 Sol Pro?
- Claude Haiku 4.5, at $6.87 per million tokens against $8 for GPT-5.6 Sol Pro, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- Claude Haiku 4.5: $6.87 at Poe. GPT-5.6 Sol Pro: nobody goes below the maker's own price with a reason we can point at, so $8 is the number to beat.
- Can I buy both from one provider?
- Yes. 7 providers sell both: NanoGPT, Nous Portal, OpenRouter, Kilo Gateway, LLMTR, 302.AI, and more. The cheapest of them for the two together is NanoGPT.
- Which holds more context?
- GPT-5.6 Sol Pro, at 1.1M tokens against 200k.
Prices exclude tax and are per million tokens, read 16 Sept 2026 from each provider's own catalog. The standard price blends three parts input to one part output; a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.